In men, as testosterone levels increase, LH levels
A) increase.
B) move up or down depending on the point in the cycle.
C) remain the same.
D) decrease.
D
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Answer the question using the accompanying figure. Which letter represents the littoral zone?
a. A only b. B only c. C only d. A and B e. B and C
Ocean currents ____ in the Northern Hemisphere and ____ in the Southern Hemisphere.
A. circulate counterclockwise; circulate clockwise B. move west to east; move east to west C. move east to west; move west to east D. circulate clockwise; circulate counterclockwise E. undulate along a line northeast and southwest; undulate along a line southeast to northwest
The breakdown of ____ into cellular energy can involve glycolysis.
A. carbohydrates B. fats C. proteins D. carbohydrates and fats E. fats and proteins
What is the structure and function of a helix-loop-helix protein?
What will be an ideal response?